# Two Links Double Pendulum vs Hellios

The clearest difference is update cadence: Hellios at daily against Two Links Double Pendulum's every 47 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Two Links Double Pendulum ships an update every 47 months, Hellios daily. The most recent releases landed on September 16, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | Two Links Double Pendulum | Hellios |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Daily** |
| Size | 281 MB | 34 MB |
| Requires iOS | 18.2 | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) | [Volodymyr Shcherbiuk](https://appshunter.io/developer/1815761531) |

## What reviewers say

### Two Links Double Pendulum

[App page](https://appshunter.io/ios/app/two-links-double-pendulum/id1625794656)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hellios

[App page](https://appshunter.io/ios/app/hellios/id6753183265)

**In-app purchases:** none


## Frequently asked questions

### Is Two Links Double Pendulum free?

Two Links Double Pendulum is free to download, with no in-app purchases.

### Is Hellios free?

Hellios is free to download, with no in-app purchases.

### Do Two Links Double Pendulum or Hellios have ads?

Neither Two Links Double Pendulum nor Hellios shows ads.

### Which is updated more often, Two Links Double Pendulum or Hellios?

Two Links Double Pendulum ships an update every 47 months, and Hellios daily. Most recently, Two Links Double Pendulum was updated on September 16, 2026 and Hellios on May 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*